The problem with using a set top box is that it only outputs one channel at a time. So you cannot watch one channel of live TV on your TV and another channel of live TV on your laptop. Whatever channel the set top box is set to is what channel you will see on the TV and the Laptop.
If you're looking to watch different channels from one cable outlet (satellite won't work), you'll need a cablecard device Like the Hauppauge WinTV-DCR-2650 and an M-Card cablecard from your cable provider and it would have to be set up like this:
- Cablel Splitter:
- M-Card from Cable Provider:
- Network TV Tuner Cable Card:
Hope this helps some.
-Wolf sends